岩石矿物学杂志2024，Vol.43Issue(3)：518-524,7.DOI:10.20086/j.cnki.yskw.2024.0303
缅甸抹谷紫方钠石光致变色效应脱色效率研究
Study of decoloration efficiency of photochromism in hackmanite from Mogok,Myanmar(Burma)
汤峻 1陈洋铃 2郭颖 3贺晴 2覃侨红2
作者信息
- 1. 中国地质大学(北京)珠宝学院,北京 100083||亚洲宝石学院(中国),广东深圳 518000
- 2. 亚洲宝石学院(中国),广东深圳 518000
- 3. 中国地质大学(北京)珠宝学院,北京 100083
- 折叠
摘要
Abstract
Photochromism is the most significant and valuable optical characteristic in hackmanite.EDXRF,FTIR,UV-VIS-NIR,D65 standard light source,illuminator and colorimetry method were applied in this paper to study the decolortation efficiency of photochromism in hackmanite from Mogok,Myanmar(Burma).The results indicated that the major elements of hackmanite are Na,Al,Si,O,Cl and S,its trace elements should include Ca,K and Fe.There are three absorption peaks of 472,540 and 667 nm in UV-VIS-NIR spectrum,with 540 nm having the stron-gest absorption peak.The peaks stay stable but their intensity decrease with time during decoloration.The absorp-tion peak area of 540 nm is significantly negative corelated with time during 0～80 s(R2=0.99).The decoloration efficiency grows significantly when the luminance increases from 5 000 lx to 30 000lx.During decoloration,the lightness of hackmanite color increases,while its chroma decreases.The color parameter a*decreases and b*increase.Its hue turns from purple to pink slightly.All the color effect of photochromism in hackmanite is a direct result of charge transfer leading to the destruction of the F center in hackmanite.关键词
紫方钠石/光致变色/色度学/脱色效率Key words
hackmanite/photochromism/colorimetry/decoloration efficiency分类
天文与地球科学引用本文复制引用
汤峻,陈洋铃,郭颖,贺晴,覃侨红..缅甸抹谷紫方钠石光致变色效应脱色效率研究[J].岩石矿物学杂志,2024,43(3):518-524,7.
